Creche in bunch of straw Muël
Last modified by the author on 07/04/2017 - 16:46
New Construction
- Building Type : Preschool, kindergarten, nursery
- Construction Year : 2014
- Delivery year : 2014
- Address 1 - street : 35290 MUëL, France
- Climate zone : [Dfb] Humid Continental Mild Summer, Wet All Year
- Net Floor Area : 430 m2
- Construction/refurbishment cost : 634 198 €
- Number of Children : 12 Children
- Cost/m2 : 1474.88 €/m2
-
Primary energy need
75.7 kWhep/m2.an
(Calculation method : RT 2012 )
The Community of Municipalities of the Pays de Saint-Méen Montauban has decided to build an early childhood facility to respond to a lack of infrastructures of this nature on the territory. This decision follows a study carried out in 2010 that led the Community of Commons to set up an investment plan for early childhood. The Early Childhood Commission proposed that the building should contain 90% natural materials, possibly local, to reduce the environmental impact and preserve indoor air quality.
Thanks to the conviction of the elected representatives, and in particular the Mayor of Muel who had already carried out projects integrating natural materials, the building was constructed with straw boots, wood and clay. The specifications of the architect thus recommended the use of 90% natural materials.
In order to accommodate 12 children under the best conditions, an approach of consultation made it possible to collect the expectations of all the stakeholders. The inhabitants were also able to take part in a participatory project.
The system retained is a mixed structure wooden frame and post-beam resting on a masonry overhang. It is not braced by panels but with crosses of Saint-André in solid wood to allow the installation of coating on both sides of the wall.
For living areas, the framework is insulated with straw bales, the technical parts and the roof are insulated in cellulose wadding.
Sustainable development approach of the project owner
The system retained is a mixed structure wooden frame and post-beam resting on a masonry overhang. She is not Not braced by panels but with crosses of Saint-André in solid wood (douglas) to allow the installation Of coating on both sides of the wall. For the areas to be lived, the framework is insulated with straw bundles, the technical parts and the roof are insulated in cellulose insulation.Architectural description
The building was deliberately designed on the ground floor to facilitate access to parents and young children and thus contribute to their well being inside the premises.Building users opinion
"The community of municipalities has wished to make an exemplary equipment in terms of environmental quality and
Well-being for children. We wanted the project to also serve to raise the awareness of the inhabitants of the territory. "
Marcel Minier, Vice-President of the community of communes, Mayor of Muel.
If you had to do it again?
Technically, the greatest point of vigilance was not the straw but rather the risk of condensation in the roof. The timber company would have preferred wooden panels, without contact with a cold wall. However, the office The ventilation was sufficient and the vapor barrier had a high Sd coefficient.
See more details about this project
http://www.reseau-breton-batiment-durable.fr/retour_experience/une-creche-en-bottes-de-pailleStakeholders
Construction company
SBK
02 96 25 21 73
http://www.sbk-batiment.com/Big work
Construction company
BRIERO
02 97 22 70 54
http://www.habiozone.fr/frame-cover
Construction company
TOTEM / TERRE ET COULEUR
02 99 06 60 58
http://www.totem-terre-couleurs.frLand and lime plasters
Construction company
ECHO PAILLE
0890210436
http://www.le-site-de.com/contacter/echopaille_6978.htmlStraw
Contractor
Communauté de communes de Saint-Méen-le-Grand
02 99 06 54 92
http://www.stmeen-montauban.fr/Owner
Construction Manager
Jean-Pierre Ingrand
02 97 73 30 30
http://www.archiliste.fr/architectes/atelier-jean-pierre-ingrandArchitect
Thermal consultancy agency
Fluditec
02 97 74 18 66
https://www.fluditec.com/Thermal study
Energy consumption
- 75,70 kWhep/m2.an
- 93,50 kWhep/m2.an
Envelope performance
- 0,46
More information
The energy consumption forecast for heating and electricity is 26 000 kWh per year.
Systems
- Low temperature floor heating
- Wood boiler
- Solar Thermal
- No cooling system
- Single flow
- Double flow heat exchanger
- Solar Thermal
Urban environment
- 2 386,00 m2
- 18,00 %
Product
Straw
Echopaille
http://www.echopaille.fr/p/contact-et-rencontres.htmlSecond œuvre / Cloisons, isolation
Part of the insulation of the building is in straw bundles. The straw used (triticale) was grown without herbicides or pesticides in a nearby commune. It was bundled and then stored for drying for 1 year in a well ventilated shed with a roof overhang to prevent it from taking the rain. 450 boots of 30 x 40 x 90 cm were used. Their density, size, weight and moisture content (20% maximum) were verified.
Thanks to the conviction of the elected representatives, and in particular the Mayor of Muel who had already carried out projects integrating natural materials, the building was constructed with straw boots, wood and clay. The specifications of the architect thus recommended the use of 90% natural materials.
Construction and exploitation costs
- 14 863 €
- 687 409 €
- 520 000 €